StartPage (www.startpage.com) is a website that displays search results from Google while removing any personally identifiable information.
They claim to protect the privacy of a user by not storing any cookies, IP addresses and other data though they do show ads.

I found that they are detecting the usage of adblockers on their site by loading this URL:

as you can see this is created specifically for detecting the use of an adblocker. This URL is blocked by ?adtype= filter in EasyList.

This is a concern as one of the major factors for using this site is protecting your privacy by not submitting any information to the search engines. This behavior is very indiscreet of a company which claims to protect the privacy of its users at any cost.

I request anyone who reads this to submit a request regarding more information about this behavior and ask why a company which claims to be a proponent in protecting user privacy is carrying out such indecent tasks.

@barbaz I also tried finding the mention of adblock on their website but couldn't. They still haven't responded to multiple requests of information for this breach of privacy. And nice work with finding the tracking pixels.